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Preparation and fundamental physical properties of the quaternary chalcogenides SnBi4$minus;xTe3+ySe4$minus;z and PbBi4$minus;xTe3$minus;ySe4$minus;z by Padmakar Kichambare; Maheshwar Sharon; Yoshitaka Seki; Takatsugu Hagino; Shoichi Nagata is a Materials Science article available to read on EtoBox.

What is Preparation and fundamental physical properties of the quaternary chalcogenides SnBi4$minus;xTe3+ySe4$minus;z and PbBi4$minus;xTe3$minus;ySe4$minus;z about?

The quaternary chalcogenides SnBi4\_~Te3+,Se 4 -: and PbBi4\_xTe3\_ySe 4 .-have been prepared and found to possess orthorhombic structure. The chemical composition of materials is confirmed by EDX. SnBia\_xTe3+~Se4\_ z and PbBi 4 Te~ ~Se 4 : exhibit a low resistivity 0.0055 ohmcm and 0.1665 ohmcm at room temperature and carrier concentration 7.15 × 10 TM and 1.97 X l016 cm 3 respectively. The Hall measurements show n-type behaviour with mobility of carrier 87 and 2534 M2/V, and band gap by diffuse reflectance are found to be 4.37 eV and 3.98 eV for SnBi 4 Te3+vSe4\_: and PbBi 4 xTe3 vSe4 : respectively.

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Author

Padmakar Kichambare; Maheshwar Sharon; Yoshitaka Seki; Takatsugu Hagino; Shoichi Nagata

Publisher

Elsevier Science; Elsevier ; Elsevier BV (ISSN 0167-2738)

Published

1997

Language

EN

Field

Materials Science (Physical Sciences)